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1 March 2007 An Interspecific Foraging Association Between Nearctic-Neotropical Migrant Passerines in Bolivia
Rosalind B. Renfrew
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Abstract

I present the first published record of a foraging association between Nearctic-neotropical migrant bird species during the austral summer in South America. I observed Barn Swallows (Hirundo rustica) and Cliff Swallows (Petrochelidon pyrrhonota) in February 2005 repeatedly foraging on aerial insects flushed by flocks of Bobolinks (Dolichonyx oryzivorous) settling onto soybean plants (Glycine max). Additional observations would be needed to distinguish this behavior between an opportunistic association and a commensal relationship.

Rosalind B. Renfrew "An Interspecific Foraging Association Between Nearctic-Neotropical Migrant Passerines in Bolivia," The Wilson Journal of Ornithology 119(1), 124-126, (1 March 2007). https://doi.org/10.1676/05-149.1
Received: 25 November 2005; Accepted: 1 July 2006; Published: 1 March 2007
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